Did you have any difficulty in learning English last year

问题描述:

Did you have any difficulty in learning English last year
为什么difficulty在这句话中有时复数又是单数?到底怎么回事啊?

这句话的difficulty是抽象的,所以用单数,如果问的是具体的几个困难,用复数.希望我的回答能够帮到你